Chapter 130 Arrangement of thesis (2 more updates, please subscribe)
On September 30th, Yenching University will hold a party to welcome the National Day and new students.
Shen Wei comes from a very good family and studied piano and dance since she was a child.
This time she will also perform at the party on behalf of the freshmen and will play the piano.
It was originally a solo, but the art teacher at the rehearsal party said that the solo was too monotonous, so it was changed to a duo performance and accompanying dance.
Shen Wei's partner is Bai Chen, a sophomore in the art department. He is the boy wearing a white shirt and giving Shen Wei McDonald's.
Yenching University may have a tradition of romance and literature, but Bai Chen was immediately attracted to Shen Wei, a southern girl with a simple temperament and pleasant appearance.
When rehearsing the party with Shen Wei, he took great care of Shen Wei and of course showed his attentiveness.
As a boy in the art department and a senior in the senior year, he has many ways to pursue girls and is not short of romance.
Explain the techniques of playing to Shen Wei, buy Shen Wei drinks or food like McDonald's, and occasionally give small gifts such as notebooks.
No matter how stupid Shen Wei is, she still knows what Bai Chen is thinking.
She called Chen Xiao just to talk about the troubles she was encountering.
She was indeed hungry during the rehearsal, but Shen Wei did not pick up Bai Chen's burger. She smiled and said, "Thank you, senior, I'm not hungry yet."
Bai Chen placed the burger in front of Shen Wei and said, "Why are you so polite? Eat it quickly."
Shen Wei apologized and said, "I'm really not hungry. Senior, please eat."
At this time, the fat man who was rehearsing the chorus, Yang Xin, who was also a freshman, was not polite at all. He grabbed the burger and said, "Hamburger! I like it the most! Thank you, Senior Bai."
Yang Xin opened the outer layer of paper and ate the burger in two bites, leaving Bai Chen with a messy look on his face.
Shen Wei suddenly remembered that when she and Chen Xiao went to the Internet cafe to surf the Internet, she saw the precautions for college freshmen on BBS - fire prevention, theft prevention and senior fellow students.
Thinking of this, Shen Wei burst into laughter.
This smile made Bai Chen crazy. It was such a clean and contagious smile.
Gao Miao handed the tool in his hand to Chen Xiao and asked jokingly: "Did your girlfriend call just now?"
Chen Xiao took the tools and started working seriously, "High school classmate."
Gao Miao asked again: "Girl"
Sure enough, women all have the potential to gossip.
Chen Xiao didn't hide it and said: "A female classmate with whom I have a very good relationship."
Gao Miao chuckled, "Where are you studying?"
"Yenjing University, Sister Miao Miao, you are a bit gossipy!"
Gao Miao patted Chen Xiao on the shoulder, "One south and one north, Xiaoxiao, it's not my sister who is gossiping, it's this feeling, I understand! Hey!"
Gao Miao seemed to have thought of something that reminded her endlessly.
Chen Xiao stared at Gao Miao and couldn't help but want to complain.
You got it!
Still Xiaoxiao?
At eight o'clock in the evening, Chen Xiao spent a whole day completing the packaging of the simple version of the ternary lithium battery.
The weather in the laboratory is not too hot, but Chen Xiao is already sweating profusely.
Why is it said to be a simple version of ternary lithium battery?
Because the best negative electrode material for ternary lithium batteries is graphene, not rough carbon powder.
It is best for ternary lithium batteries to use nano-scale polymer separators to allow ions to pass smoothly but other substances in the solution not to pass, thereby increasing the energy density of the battery.
But due to the limitations of the technology and materials of the times.
There is no graphene or polymer nano-separator, only fiber membrane and carbon powder, so this is a simple version of ternary lithium battery.
In addition, Chen Xiao also packaged traditional lithium cobalt oxide batteries.
Because the packaging technology is much better than Gao Miao's own thinking, the performance and stability of the battery are also very high.
"It's done?" Gao Miao's eyes were shining!
What she and her team members have been tinkering with for more than half a year has no effect, and now it actually works?
Once you are done, you can write a paper. Not only can you write a paper, but you can also submit it on time.
Just now when Chen Xiao was making packaging, Gao Miao was worried that Chen Xiao was hungry, so he went to the canteen and bought Chen Xiao rice and a braised chicken leg.
Chen Xiao installed aluminum films on the outside of two lithium batteries, then attached labels and prepared for testing.
Why not use aluminum plastic film?
Because the aluminum-plastic film is a multi-layer film composed of an outer nylon layer, an adhesive, an intermediate layer of aluminum foil, an adhesive, and an inner heat-sealing layer, the laboratory did not have the conditions to create it, so aluminum film was used.
Aluminum film can also improve the explosion resistance of the battery.
"Eat first and then experiment?"
Chen Xiao was not polite and ate lunch with Gao Miao, and ate the whole chicken leg by the way.
The only sound in the quiet laboratory was the sound of two people eating.
Gao Miao couldn't help but sigh and said: "Why didn't I meet you earlier? If you were my classmate in the first year of college, maybe we could review for the postgraduate entrance examination together, and I could get into a better university. If I could meet you in the first year of postgraduate study, we would go to
We can do scientific research and write papers together in the second year of graduate school, and we won’t have to rush to catch up with the progress now.”
Chen Xiao gnawed on the chicken leg and said, "Sister Miao Miao, please stop dreaming. I was just in the first grade of junior high school when you were a freshman."
Gao Miao couldn't help but laugh when he heard Chen Xiao calculating the time in a serious manner.
After the meal, the two of them didn't want to waste time anymore.
Start doing a series of tests on the battery.
Including battery energy density, battery capacity, battery anti-explosion performance, etc.
At 11 o'clock in the evening, all the data came out.
Among them, the capacity of the 18650 battery specification lithium cobalt oxide battery can reach 2000mAh, the voltage can be stable at around 3.6V, and the energy density has reached 150mAh/g.
The energy density of ternary lithium battery reaches 210mAh/g, and the capacity can reach 2700mAh.
The anti-explosion performance is also very good, reaching the industry standard specified by Sony for lithium batteries.
Ordinary companies can produce qualified industry products, while excellent companies set industry standards.
Obviously, the current standard is set by Sony.
The performance of lithium cobalt oxide batteries is already comparable to Sony's standardized lithium batteries.
If Chen Xiao had a standardized production workshop, the performance of lithium cobalt oxide batteries would be even stronger.
Although Chen Xiao was not the first to invent the ternary lithium battery (using three lithium-containing compounds as the positive electrode is a ternary lithium battery), it was definitely the first time that Chen Xiao sorted out and made one that could be mass-produced and was very stable.
of ternary lithium batteries.
When Chen Xiao reported the last data and Gao Miao put down the pen to write out the data, the laboratory fell silent.
Success!
Success!
Success came so suddenly, yet so clean, logical and organized!
"ah!!"
Gao Miao screamed with excitement, ran over to hug Chen Xiao, and shouted loudly: "Xiaoxiao! We succeeded! Woohoo! We succeeded."
Gao Miao got close to Chen Xiao because of her excitement.
Um!
Great feeling.
Chen Xiaoqing coughed twice and said, "Senior sister, we can prepare the paper."